Puro II

Summary

Product identification

PURO-II Strengthened RO Membrane Elements - Helixfil Series

Application

PURO-Ⅱ membrane elements are designed for higher endurance to chemical cleaning and improved fouling resistance due to a brand-new feed channel spacer design with low pressure differentials.

Typical applications include:

• Pure water production from surface water (e.g., lake water, river water).
• Desalination of reclaimed water (e.g., industrial wastewater, RO concentrated water).

Product Performance

Model: PURO-II

• Stable Rejection Rate: 99.8%
• Permeate Flow: 11500 GPD (43.5 m³/d)
• Active Membrane Area: 400 ft² (37.2 m²)
• Feed Spacer Thickness: 34-LD mil

Test Conditions:

1. Operating pressure: 225 psi (1.55 MPa)
2. Feed water: 2000 mg/L NaCl solution
3. Temperature: 25℃
4. pH: 7.0 ± 0.5
5. Recovery rate: 15%

Notes:

• Each membrane element may have ±15% variation of permeate flow.
• Minimum Rejection Rate: 99.5%

Operating Limits

• Maximum operating pressure: 600 psi (4.14 MPa)
• Maximum feedwater temperature: 45 ℃
• Maximum pressure drop per element: 15 psi (0.1 MPa)
• Allowed pH range for feedwater in operation: 2-11
• Allowed pH range for chemical cleaning: 1-13

Feed Water Parameters

• Maximum inlet flow rate: 17 m³/h
• Maximum concentration of free chlorine: 0.1 mg/L
• Maximum feedwater flow SDI₁₅: 5

Mechanical Data

• Packing carton (L:W:H): 1080×216×232mm
• Connector material number: 3.02.09.0006

Important Operational Notes

• Preservation:
  • Dry membrane elements leave the factory without preservation solution.
  • Wet membrane elements contain 1.0% sodium bisulfite (with 10% propylene glycol antifreeze in winter) as a preservation solution, and are vacuum-packaged.
  • Dry membrane elements must be kept wet after initial soaking.
  • Wet membrane elements not in use for a long time require soaking in preservation solution.
• Initial Startup:
  • It is recommended to flush the membrane elements first for 15-25 minutes at low pressure (avoid soaking overnight).
  • Follow with a flush for 60-90 minutes at high pressure (water flow not less than 50% of system design flow).
  • Permeate and concentrated water from the first hour of operation must be discharged.
• Warranty: The stated operating limits and guidelines are part of the limitations for the three-year membrane element warranty.
• Chemical Use: The addition of any chemicals that may affect the membrane element during storage and operation is prohibited. Vontron Technology disclaims liability for consequences from such chemical use.
• Further Details: Refer to the Product Manual for detailed instructions on installation, commissioning, storage, and transportation.

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions. Contractual data must match the official OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet